Here start with apha star from r1c8, follow BOTH digits and you will exclude digit 6 from r6c9.
Now start with apha star from r2c1, follow BOTH digits and you will
exclude digit 6 from r6c4.
Finally, start agin with apha star from r2c1, follow again BOTH digits and you will exclude 9 from r6c2 and this is breaking the puzzle.